FZPS40 PHFO 120344

HSFSP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

0530 UTC FRI DEC 12 2025



SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS



SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT

OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN

TWICE THE SIGNIFICANT WAVE HEIGHT.



THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE

HIGHER THAN 10-MINUTE AVERAGE WINDS.



SECURITE



SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E



SYNOPSIS VALID 0000 UTC DEC 12 2025.

24 HOUR FORECAST VALID 0000 UTC DEC 13 2025.

48 HOUR FORECAST VALID 0000 UTC DEC 14 2025.



.WARNINGS.



...GALE WARNING...

.LOW NEAR 10S167E 1003 MB MOVING SE SLOWLY. TROUGH FROM 25S175W 

TO 16S174E TO LOW TO 07S160E NEARLY STATIONARY. WINDS 30 TO 35 KT 

WITHIN 210 NM E SEMICIRCLE OF LOW. WINDS 20 TO 30 KT ELSEWHERE 

FROM 12S TO 05S BETWEEN 165E AND 171E. SCATTERED MODERATE TO 

STRONG TSTMS FROM 14S TO 03S W OF 174E. ISOLATED MODERATE TSTMS 

ELSEWHERE WITHIN 210 NM OF TROUGH S OF 14S.

.24 HOUR FORECAST LOW NEAR 11S168E 999 MB. TROUGH FROM 25S177W TO

17S173E TO LOW TO 07S160E. WINDS 30 TO 35 KT WITHIN 210 NM E 

SEMICIRCLE OF LOW. WINDS 20 TO 30 KT ELSEWHERE WITHIN 270 NM NE 

OF TROUGH AND LOW W OF 173E. 

.48 HOUR FORECAST LOW NEAR 13S170E 994 MB. TROUGH FROM 25S174W TO

LOW TO 09S160E. WINDS 30 TO 40 KT WITHIN 210 NM E SEMICIRCLE OF 

LOW AND 60 NM W SEMICIRCLE OF LOW. WINDS 20 TO 30 KT ELSEWHERE 

WITHIN 270 NM OF LOW AND TROUGH BETWEEN 165E AND 175E. SEAS 2.5 TO

4 M FROM 14S TO 08S BETWEEN 167E AND 171E.



.SYNOPSIS AND FORECAST.



.TROUGH 25S135W 21S139W 16S153W MOVING SW SLOWLY. ISOLATED 

MODERATE TSTMS S OF 22S WITHIN 120 NM OF TROUGH...AND FROM 19S TO 

15S BETWEEN 154W AND 149W.

.24 HOUR FORECAST TROUGH 25S133W 17S153W.

.48 HOUR FORECAST TROUGH 21S150W 20S162W 16S170W.



.TROUGH 18S133W 14S138W 09S149W MOVING SW SLOWLY. ISOLATED 

MODERATE TSTMS FROM 20S TO 16S BETWEEN 135W AND 131W.

.24 HOUR FORECAST TROUGH DISSIPATED.



.TROUGH 11S168W 09S175W 05S179W MOVING SW SLOWLY. ISOLATED 

MODERATE TSTMS FROM 09S TO 06S BETWEEN 171W AND 165W. 

.24 HOUR FORECAST TROUGH DISSIPATED.



.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF 

FORECAST AREA.



.ISOLATED MODERATE TSTMS FROM 19S TO 14S BETWEEN 166W AND 160W.



$$



.FORECASTER TROTTER. HONOLULU HI.